Search Results for the EPA National Library Catalog

Items Found: 5

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Your Search: (SUBJECT=Geology Pennsylvania Armstrong Co)

 
 
 

Select Item Title Year Published
Greater Pittsburgh region construction aggregates / 1974
Greater Pittsburgh region properties and uses of clays and shales / 1976
Oil and gas developments in Pennsylvania in 1975 / 1976
Oil fields of the Greater Pittsburgh region / 1976
Summary ground-water resources of Armstrong County, Pennsylvania 1973

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